基于扁铲侧胀试验的桩基水平承载力分析

依据扁铲侧胀试验的结果,对桩侧土水平抗力系数的比例系数进行了估算,并估算出单桩水平承载力设计值;根据单桩水平载荷试验的成果,计算出试验桩的水平临界荷载平均值,并得到桩侧土水平抗力系数的比例系数;在此基础上,对两者进行了对比分析,其单桩水平承载力非常接近,但比例系数存在差异。认为不宜将试桩的结果直接应用于工程桩的水平承载力计算,应根据工程桩的实际情况,考虑承台、桩群、土相互作用产生的群桩效应。

Analysis on lateral bearing capacity of pile based on DMT

Based on dilatometer test result,the proportional coefficient of lateral resistance coefficient in pile's lateral soil,and the design value of single pile lateral bearing capacity is estimated.Then based on the result of pile lateral load test,the average value of horizontal critical load is worked out,and the proportional coefficient of of lateral resistance is figured out.Through the contrast and analysis on the both of calculation results,their lateral bearing capacity are very close,but the proportional coefficient is different.It is deemed that it is not suitable to use the test pile's results in the calculation of project pile's lateral bearing capacity,it should be based on the actual condition,and considers the efficiency of pile groups about the pile caps,piles and soil.